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Mortgage Servicing Rights: Summary of Loans serviced for Freddie Mac (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Transfers and Servicing [Abstract]
Loans serviced for Freddie Mac, Principal amount	$ 331,494	$ 327,594	$ 325,726

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